<template>
	<!-- 有商品 -->
	<view class="cart-container" v-if="cart.length !== 0">
		<!-- 收货地址组件 -->
		<my-address></my-address>
		<!-- 商品列表的标题区 -->
		<view class="cart-title">
			<!-- 左侧的图标 -->
			<uni-icons type="shop-filled" size="18"></uni-icons>
			<!-- 描述文本 -->
			<text class="cart-title-text">购物车</text>
		</view>
		<!-- 循环渲染购物车数据 -->
		
		<uni-swipe-action>
			<block v-for="(item,index) in cart" :key="index">
				<uni-swipe-action-item :right-options="options" @click="swipeItemClickHandler(item)">
					<my-goods :goods="item" :showRadio="true" :showNum="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
				</uni-swipe-action-item>
			</block>
		</uni-swipe-action>
		<!-- 使用结算组件 my-settle -->
		<my-settle></my-settle>
	</view>
	<!-- 无商品 -->
	<view class="empty-cart" v-else>
		 <image src="/static/cart_empty@2x.png" class="empty-img"></image>
		 <text class="tip-text">空空如也~</text>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	import {mapState,mapMutations} from 'vuex'
	export default {
		mixins:[badgeMix],
		computed:{
			...mapState('m_cart',['cart'])
		},
		data() {
			return {
				options:[{
					text:'删除',
					style:{
						backgroundColor:'#c00000'
					}
				}]
			};
		},
		methods:{
			...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
			radioChangeHandler(e){
				console.log(e)
				this.updateGoodsState(e)
				this.setBadge()	
			},
			numberChangeHandler(e){
				console.log(e)
				this.updateGoodsCount(e)
				// 重新控制购物车徽标的数字
				this.setBadge()	
			},
			swipeItemClickHandler(goods){
				console.log(goods)
				this.removeGoodsById(goods)
				this.setBadge()
			}
		}
	}
</script>

<style lang="scss" scoped>
.cart-container{
	padding-bottom: 50px;
}


// 商品列表的标题区
.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text {
    margin-left: 10px;
  }
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
